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AD5160 SPI parameters?



		

			

									
					    samuel.fmlourenco
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Mar 30, 2017 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi,
    
 
    What would be the correct settings to send data to the AD5160 via SPI. The datasheet tells me that the clock polarity is active low (CPOL = 1) and leading edge triggered (CPHA = 0) regarding the phase. Is this correct?
    
 
    Thanks in advance!
    
 
    Kind regards, Samuel Lourenço
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		
	
    















    
	
    
	
    
					



			


				
	









	
      
	

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      •  Analog Employees  
      
            
			                            
                        
                on May 24, 2017 10:12 AM
            
            
					
      
	
      

		
		
      
					
      Hi Samuel,
      
 
      CPOL=0 since the idle state is logic 0 for SCLK. Meanwhile CPHA=0 because data is valid on the rising edge of SCLK.
      
 
      Best regards,
      
 
      Rainier
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

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                on Apr 30, 2018 5:43 PM
            
            
					
        
	
        

		
		
        
					
        
  
        Hi,
        
  
        An extra question strongly related to this: I need to have this working in SPI mode 3, as I have other devices on the bus, which only works with an inactive high CLK.
        When I look at the datasheet for AD5200, which is somewhat worded similarly in regards to the the interface section, it has a truth table, from which I can see that it would also work fine in SPI mode 3. Unfortnuately, AD5160 lacks this table.
        
  
         
        
  
        Can you please confirm whether or not the AD5160 will work just a reliably in SPI mode 3 (CPOL=1, CPHA=1) ?
        
  
        Thanks
        
 
        
			
        

		
		
		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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        •  Analog Employees  
        
            
			                            
                        
                on May 2, 2018 5:18 PM
            
            
					
        
	
        

		
		
        
					
        Hi,
        
 
        You can refer the following table:
        
 
        
  
        
   
    
        
     CLK
     CSb
     Register Activity
    
        
           
   
    
        
     L
     L
     No Sr effect
    
        
    
        
     P
     L
     Shifts one bit in from SDI pin
    
        
    
        
     X
     P
     Loads SR data into RDAC latch
    
        
    
        
     X
     H
     No operation
    
        
           
  
        
 
        
 
        Since you CPOL=1, i think it will work with CPHA=1.
        
 
        Regards,
        
 
        Koushik
        
			
        

		
		
		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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